adding checks for TTL being 0

edit the wrong IPv4 function

FDR TTL no longer accepts 0

removed wrong setting within a function

removed to much there

spacing

forget to remove if statement

removed individual function check for 0 and added a single check

Author: darren conroy

src/bacnet/basic/object/netport.c

@@ -3285,7 +3285,7 @@ static bool Network_Port_FD_Subscription_Lifetime_Write(
     if (!error_class || !error_code) {
         return status;
     }
-    if (value > UINT16_MAX) {
+    if (value > UINT16_MAX || value == 0) {
         *error_class = ERROR_CLASS_PROPERTY;
         *error_code = ERROR_CODE_VALUE_OUT_OF_RANGE;
         return status;